tree 4688c194c399de3a34769dbf5cd0bb31ab278d99
parent 2842e5bf3115193f05dc9dac20f940e7abf44c1a
author Joerg Roedel <joerg.roedel@amd.com> 1220546405 +0200
committer Ingo Molnar <mingo@elte.hu> 1221821947 +0200

AMD IOMMU: implement lazy IO/TLB flushing

The IO/TLB flushing on every unmaping operation is the most expensive
part in AMD IOMMU code and not strictly necessary. It is sufficient to
do the flush before any entries are reused. This is patch implements
lazy IO/TLB flushing which does exactly this.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>